NPPES file of Aug 9, 2026

William M. Mayer, MD

Obstetrics & Gynecology Physician · Columbia, MD

William M. Mayer, MD is an obstetrics & gynecology physician with a practice address in Columbia, Maryland, and NPI 1598767436, issued on Aug 11, 2005. Check the license (Maryland D20510, as entered in NPPES) on the Maryland Board of Physicians; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1598767436
Name
William M. Mayer
Credential
MD
Primary taxonomy
Obstetrics & Gynecology Physician 207V00000X
License number
D20510 MD
Self-reported in NPPES; status is on the state search
Practice location
10710 Charter Dr, Columbia, MD 21044
Phone
(410) 997-0580
Enumerated
Aug 11, 2005
Record last updated
Dec 9, 2009 (not updated in 17 years: call before relying on the address or phone)
Fax
(410) 740-8587
Medicaid ID
310421477 MD
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest obstetrics & gynecology physician records → All 1,034 in Maryland → Look up another NPI →

Also registered at 10710 Charter Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Orsam Ahmed, DPTPhysical Therapist1508313420
  2. Richard Andorsky, M.D.Gastroenterology Physician1295733558
  3. Marc Applestein, M.D.Urology Physician1679511620
  4. Kevin Blumenthal, MDUrology Physician1215182662
  5. Zahid Butt, MDGastroenterology Physician1730162975
  6. Phyllis Campbell, MDGynecology Physician1497755425

Verify William M. Mayer in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMaryland Board of Physicians
    Search for license D20510    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Maryland license search

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William M. Mayer among 1,034 obstetrics & gynecology physician records in Maryland

William M. Mayer, MD is one of 1,034 obstetrics & gynecology physician records with a practice address in Maryland. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 86% newer
  • In a Medicare fileNo · 75% of these records are
  • In the CMS Doctors and Clinicians fileNo · 58% of these records are
  • Record last updated2009 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

56 obstetrics & gynecology physician records list a practice address in Columbia

They are 56 of the 6,690 NPPES records with a practice address in Columbia, and 1,034 obstetrics & gynecology physician records in Maryland. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 1,034 in Maryland → Every provider in Columbia → Obstetrics & Gynecology Physician nationwide →

The 8 obstetrics & gynecology physician records with the nearest ZIP codes

  1. Mohammed Ahmed, MDColumbia, MD 210441467463018
  2. Upasana Bhatnagar, MDColumbia, MD 210441982663365
  3. Rona Eisen, M.D.Columbia, MD 210441033164058
  4. Carol Goundry, M.D.Columbia, MD 210441679520910
  5. Yasmin Holsey, MDColumbia, MD 210441992893630
  6. Denise Kirkner-Vourlos, M.D.Columbia, MD 210441073580361
  7. Louis Kokkinakos, M.D.Columbia, MD 210441275550998
  8. Norman Neches, M.D.Columbia, MD 210441487617387

Common questions

What is William M. Mayer, MD's NPI number?

William M. Mayer, MD's National Provider Identifier (NPI) is 1598767436, issued on Aug 11, 2005. An NPI identifies a provider in billing; it is not a license.

Where is William M. Mayer, MD located?

The NPPES record lists a practice address at 10710 Charter Dr, Columbia, MD, 21044. Phone: (410) 997-0580. Providers update this record themselves, so call before visiting.

How can I verify William M. Mayer, MD's license?

NPPES lists Maryland license number D20510, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.